OK here is the latest thrust bearing fix for the Ross 2.17:1 gear box.

The tiny lip holding the seal in the bell housing will have to be removed
by filing or by a die grinder.

The dynamic load rating on these bearings is 7150 pounds and max RPM
is 6500 RPM but there are two of them back to back so
they each are rotating at half input speed. The life should be way
up there but I have not calculated it yet.

Yes I know there is a minor mistake in the drawing as the shaft must
be ground down to 1.44x where the sun gear is pressed on.
That will make the ground down part of the sun gear thicker looking
on this drawing.

Paul Lamar

The Ross shaft already is 1.441" all the way back to the splines.

Hey this is not for you Finn. This is for people willing to make a new
input shaft :-)

I was told that you can't turn the sun gear in a lathe, it has to be ground.

Yes of course. So get it ground.

The forward flange on your adapter can be up to 3/16" thick.

1/8 inch is plenty. A thicker flange is not going to make it stronger.

I still think the 1/2" alu plate bolted to the rear of the bulkhead is
simpler. It would basically be a 5.5" (or less)  circular cut-out of Tracy's
mount plate (you got a drawing of that).

I guess it depends on what tools you have available.
If you only have a lathe, the adapter is preferable.
If you have a mill and can machine the rear side bulkhead flat and the
counterbore in the 1/2" plate, then that's preferable.

Finn

I think this is preferably because it is cheap and self aligning. 
These aluminum hat sections can be knocked out in a small lathe 
lickety split.

Paul Lamar
 
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